"""add_closed_at_attribute_in_issues

Revision ID: 43df5e588a87

Revises: 22db0a833d35

Create Date: 2016-06-28 22:59:36.653905

"""

# revision identifiers, used by Alembic.

revision = '43df5e588a87'

down_revision = '22db0a833d35'

from alembic import op

import sqlalchemy as sa

def upgrade():

    ''' Add closed_at column in issues table '''

    op.add_column(

            'issues',

            sa.Column('closed_at', sa.DateTime, nullable=True)

    )

def downgrade():

    ''' Remove the closed_at column in issues table '''

    op.drop_column('issues', 'closed_at')